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Support -fno-delayed-template-parsing in clang-cl.exe 

Summary:
This change adds support for the -fno-delayed-template-parsing option in
clang-cl.exe. This allows developers using clang-cl.exe to opt out of
emulation of MSVC's non-conformant template instantiation implementation
while continuing to use clang-cl.exe for its emulation of cl.exe
command-line options. The default behavior of clang-cl.exe
(-fdelayed-template-parsing) is unchanged.

The MSVC Standard Library implementation uses clang-cl.exe with this
switch in its tests to ensure that the library headers work on compilers
with the conformant two-phase-lookup behavior.

Reviewers: majnemer, cfe-commits, DaveBartolomeo

Differential Revision: https://reviews.llvm.org/D22275

llvm-svn: 290990
This commit is contained in:
Reid Kleckner 2017-01-04 19:15:53 +00:00
parent b0d96f5375
commit 1b576eb0b3
2 changed files with 11 additions and 2 deletions
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5
clang/include/clang/Driver/Options.td
View File

@ -882,7 +882,7 @@ def fms_compatibility_version
"(default))">;
def fdelayed_template_parsing : Flag<["-"], "fdelayed-template-parsing">, Group<f_Group>,
HelpText<"Parse templated function definitions at the end of the "
"translation unit">, Flags<[CC1Option]>;
"translation unit">, Flags<[CC1Option, CoreOption]>;
def fms_memptr_rep_EQ : Joined<["-"], "fms-memptr-rep=">, Group<f_Group>, Flags<[CC1Option]>;
def fmodules_cache_path : Joined<["-"], "fmodules-cache-path=">, Group<i_Group>,
Flags<[DriverOption, CC1Option]>, MetaVarName<"<directory>">,
@ -1031,7 +1031,8 @@ def fno_ms_extensions : Flag<["-"], "fno-ms-extensions">, Group<f_Group>,
Flags<[CoreOption]>;
def fno_ms_compatibility : Flag<["-"], "fno-ms-compatibility">, Group<f_Group>,
Flags<[CoreOption]>;
def fno_delayed_template_parsing : Flag<["-"], "fno-delayed-template-parsing">, Group<f_Group>;
def fno_delayed_template_parsing : Flag<["-"], "fno-delayed-template-parsing">, Group<f_Group>,
Flags<[DriverOption, CoreOption]>;
def fno_objc_exceptions: Flag<["-"], "fno-objc-exceptions">, Group<f_Group>;
def fno_objc_legacy_dispatch : Flag<["-"], "fno-objc-legacy-dispatch">, Group<f_Group>;
def fno_objc_weak : Flag<["-"], "fno-objc-weak">, Group<f_Group>, Flags<[CC1Option]>;

8
clang/test/Driver/cl-options.c
View File

@ -295,6 +295,14 @@
// RUN: %clang_cl -c -fno-strict-aliasing -### -- %s 2>&1 | FileCheck -check-prefix=NOSTRICT %s
// NOSTRICT: "-relaxed-aliasing"
// We recognize -f[no-]delayed-template-parsing.
// RUN: %clang_cl -c -### -- %s 2>&1 | FileCheck -check-prefix=DELAYEDDEFAULT %s
// DELAYEDDEFAULT: "-fdelayed-template-parsing"
// RUN: %clang_cl -c -fdelayed-template-parsing -### -- %s 2>&1 | FileCheck -check-prefix=DELAYEDON %s
// DELAYEDON: "-fdelayed-template-parsing"
// RUN: %clang_cl -c -fno-delayed-template-parsing -### -- %s 2>&1 | FileCheck -check-prefix=DELAYEDOFF %s
// DELAYEDOFF-NOT: "-fdelayed-template-parsing"
// For some warning ids, we can map from MSVC warning to Clang warning.
// RUN: %clang_cl -wd4005 -wd4100 -wd4910 -wd4996 -### -- %s 2>&1 | FileCheck -check-prefix=Wno %s
// Wno: "-cc1"